Breakdown (vehicle)
mechanical failure
A vehicle breakdown is a mechanical or electrical failure of a motor vehicle that renders the vehicle inoperable or causes further operation of the vehicle to be unsafe.
Vehicle breakdowns have various causes. Depending on the severity, the vehicle may need to be towed to an automobile repair shop or fixed on-site by roadside assistance or a mobile mechanic. With other problems, the driver may be able to operate the vehicle seemingly normally for some time, but the vehicle will need an eventual repair. Many vehicle owners with personal economic difficulty or a busy schedule may wait longer than they should to get necessary maintenance or repairs made to their vehicles, thereby increasing their chances of a breakdown, inducing further damage to the vehicle, or else causing more danger.
Causes
In 2014, The Royal Automobile Club (RAC) attended almost two million breakdowns in the United Kingdom. Battery problems were the most common cause of a car breakdown, accounting for more than 450,000 call-outs.
Top 10 causes
Dead or faulty battery
Engine issues
Faulty alternator
Damaged tyre & wheel
Electrical issues
Starter motor problem
Damaged clutch wire
Brake problems
Fuel problems
Lost car keys
Source:
Contributing factors
Roadside assistance data collected, analyzed and published by AAA provides the following statistical insights into vehicle breakdowns in the United States and Canada:
Age
Vehicles ten years and older are twice as likely to end up immobilized on the side of the road compared to newer vehicles, and the odds of needing a tow quadruples.
Vehicles fewer than five years old have a higher proportion of tire, key and fuel-related issues than older vehicles.
One in five service calls for a newer vehicle required a tow to a repair facility.
This brief starts where responsible research should: with the source description of “Breakdown (vehicle)” as mechanical failure. Everything that follows is an evidence route, not borrowed authority.
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Named sources, stable identifiers and responsible institutions provide the strongest route from overview to verifiable evidence. The source revision retrieved here is dated Sep 18, 2026. The linked authority identifier is Q16846061. None of the 0 selected statements returned an explicit reference. The first chronological checks are 2014.
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This entry incorporates text from “Breakdown (vehicle)” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.